information on heart murmurs
Chambers of the Heart
Valves of the Heart
pericardium of the heart
+ keeps the heart contained in the chest
+ prevents the heart from over expanding when blood volume increases
+ limits heart motion (keeps in one spot)
Oxygen, carbon dioxide, nutrients and wastes are taken out through the thin walls. and the walls are made up of endothelium (a type of simple squamous epithelial tissue).
5 factors to having high blood pressure is=
+ blood volume= the larger the volume, the more pressure is exerted on vessel walls
+ strength of heart contractions= affect cardiac output, stronger heartbeat increase pressure, and weaker beat
+ heart rate= increase rate increase pressure, decrease rate decrease pressure
+ blood viscosity= less than normal decrease pressure, more than normal viscosity increase pressure.
+ resistance to blood flow= affected by many factors, including the vasomotor mechanism( vessels muscle contraction/ reflection)
major blood vessels of the heart
aorta= largest artery in the body. transfers oxygenated blood threw out the parts of the body.
left/right pulmonary arteries= carries de-oxygenated blood from the heart to the lungs. on of the only arteries that can carry de-oxygenated blood.
Pulmonary trunk= begins in the base of the right ventricle, then branches into 2 pulmonary arteries left and right.
left/ right pulmonary veins=carry oxygenated blood from the lungs to the left atrium of the heart,
superior / inferior vena cava= are the 2 largest veins in the body. carry de-oxygenated blood from various regions of the body right to the atrium of the heart.
systole phase= ventricles contract and pump blood out to arteries
diastole phase= the heart ventricles are relaxed and the heart fills with blood
What is a pulse?
Normal heart sounds
What causes a normal heart sound
WBC=white blood cell count, screens for a wide amount of diseases and conditions.
Platelet= number of platelets in a sample of blood, screen for diagnoses or monitor conditions that effect the number of platelets such as bleeding disorders and bone disease or other underlying conditions.
What could cause heart murmurs?
Innocent= blood flows more rapidly threw the heart, more common in new born and children.
* high amounts of thyroid hormone
Abnormal= usually means heart problems, and heart defects. more common in adults
* holes in the heart
* heart valve abnormalities